Mike,
There are many rules for poker, we that play the game, assume everyone knows; for example; like the action moving clockwise.
I think we should give a very brief mention of the blinds not being counted as action because they are forced bets before cards are even seen. Otherwise we will find ourselves going over the same wording for each rule.
A suggestion: Under general concepts #5 DIRECTION OF PLAY: All action will proceed clockwise from the dealer, or button. This will include dealing and betting. Forced bets, such as blinds are not considered as action. SEE #33 SUBSTANTIAL ACTION.
I was thinking of a scenario, where two or three players are skipped in a betting round. I don't think I would rule that the same as skipping only the one proper bettor, which is what we always discuss. I would be more inclined to look directly at #36 and not #33. I would back the action to the proper player.....in other words, even though substantial action occurred, the action reverts to the proper bettor, then if the action does not change to each out of turn, it remanis in the pot.
Jasper does bring up a good point. There are other situations when the wrong bet is made on a betting round and multiple players have already acted. Example blinds 300/600 and on the turn the first player bets 300 and four players call.
Mike, I wonder if we shouldn't move this to another section. It's a great discussion but I might be getting away from what you were looking for.